Utilization of Non-Pseudomorphic Growth to Realize Tensile Strain on GaAs Substrates

Abstract
A novel structure consisting of a thick non-pseudomorphic InAlAs grid layer and InGaAs-GaAs strained-layer superlattice dislocation filter is proposed for realizing tensile strain on GaAs substrates. The structure is examined and characterized by photoluminescence, Nomarski etch-pit microscopy and double crystal X-ray diffraction and found to be effective in the incorporation of tensile strain in devices grown on the GaAs substrate.